The National Military Strategy DOD completed at the end of the year may remain classified, a change from previous editions that were unclassified and released to the public, according to Defense News.

A spokesman for Joint Chiefs of Staff Chair Joe Dunford told Defense News the plan was submitted to Congress and the defense secretary but that “the strategy is classified to enable the chairman to fully assess the joint force operating environment and provide unfettered military advice in support of the 2018 National Defense Strategy.”

The spokesman did not rule out releasing an unclassified version in the future, which would be in line with public statements Dunford has made about the need for transparency with the strategy.